2. Dot Product

Given two vectors $\mathbf{a}$ and $\mathbf{b}$ of equal length, return their dot product.

The dot product is defined as:

$\mathbf{a} \cdot \mathbf{b} = \sum_{i=1}^{n} a_i b_i$

Where $n$ is the length of each vector.

Example

a = [1, 2, 3]
b = [4, 5, 6]
Output: 32   # (1×4 + 2×5 + 3×6)

Constraints

• You may use NumPy or pure Python.
• Both inputs will always have the same length.